Store Renderables as non-const pointers or references

[libs/gl.git] / source / effect.h

diff --git a/source/effect.h b/source/effect.h
index dfb369614c28c2388b1dcdd249e20e4d331224ec..1211c3b5094dee3ba14c73aed6f258b39d0aabd8 100644 (file)
--- a/source/effect.h
+++ b/source/effect.h
@@ -9,20 +9,26 @@ namespace GL {
 
 /**
 Effects are used to wrap other renderables and give them additional visual
-properties.
+properties.  An Effect's render method should set up the necessary state, call
+the wrapped Renderable's render method, and clean up after itself.
 */
 class Effect: public Renderable
 {
 protected:
-       const Renderable &renderable;
+       Renderable &renderable;
        std::set<Tag> enabled_passes;
 
-       Effect(const Renderable &);
+       Effect(Renderable &);
 public:
        virtual ~Effect() { }
 
        void enable_for_pass(const Tag &);
        void disable_for_pass(const Tag &);
+
+       virtual const Matrix *get_matrix() const { return renderable.get_matrix(); }
+
+       virtual void setup_frame() const { renderable.setup_frame(); }
+       virtual void finish_frame() const { renderable.finish_frame(); }
 };
 
 } // namespace GL